sla slb sld sle sli sll sln slp sls slt slx sna snb snd sne sni snl snn snp sns snt spa spb spd spe spi spl spn spp sps spt spx ss- ssa ssb ssd sse ssi ssl ssn ssp sss sst ssx sta stb std ste sti stl stn stp sts stt stx sxi sxl sxn sxs sxt t-x taa tab tad tae tai tal tan tap tas tat tax tba tbb tbd tbe tbi tbl tbn tbp tbs tbt tda tdb tdd tde tdi tdl tdn tdp tds tdt tdx te- tea teb ted tee tei tel ten tep tes tet tex tia tib tid tie tii til tin tip tis tit tix tla tld tle tli tll tln tlp tls tlt tlx tna tnb tnd tne tni tnl tnn tnp tns tnt tnx tpa tpb tpd tpe tpi tpl tpn tpp tps tpt tpx tsa tsb tsd tse tsi tsl tsn tsp tss tst tsx tta ttb ttd tte tti ttl ttn ttp tts ttt ttx txe txi txl txn txs txt xaa xad xal xan xap xas xat xbe xbl xbx xda xdb xde xdi xds xdt xed xee xel xen xep xes xet xex xia xie xii xin xis xit xix xla xlb xld xli xls xlt xna xns xpa xpb xpd xpe xpl xpn xpp xps xpt xsa xsb xsi xsl xsp xss xst xti xtp xts xtx xxi xxl xxp xxx